When do you gain slow for the Swamp?

[Werekingdom]

Ok, so from what I'm reading it sounds like you gain slow. So when leaving the zone you are slow (unless you are also fast = normal).
The question I have is does the slow come into effect once you enter the zone. Meaning, can I not attack if I move into the zone because I gain slow?

Swamp text:
   Non-Flying, non-aquatic creatures in this zone gain the slow and unmovable traits, and lose and cannot gain the elusive trait.

[Zuberi]

You gain/lose the slow trait depending on what zone you're currently in, so it will be applied/removed during the Move Step. This means that when entering the zone, it will be applied before your move is finished, and after your move is finished you must end your activation. No extra quick action for you.

When leaving the zone, you will be freed of the slow trait before you end your movement and will be able to perform another quick action.

[Zuberi]

Basically swamp is a good defensive terrain. It protects you from an attack when they first move in, and eliminates one of the main ways they have of getting past your guards. It does not make them stuck in the zone to help a pit trap strategy though, nor does it really offer direct offensive benefits. Though if you can use Elusive and they can't, that can be pretty nice.

[Arkdeniz]

Is there any difference between the Swamp's application of the Slow trait upon entering and the Steep Hill's "Non-flying creatures require a full action to move into this zone"?

Am I reading it right that both wordings simply mean that a creature entering the zone will be unable to do anything else on arrival, but they will be able to act freely while in the Swamp/on the Hill (with the caveat about the Swamp's unmovable and non-elusive) and can move out of the zone with no ill-effects?

[Coshade]

Is there any difference between the Swamp's application of the Slow trait upon entering and the Steep Hill's "Non-flying creatures require a full action to move into this zone"?

Am I reading it right that both wordings simply mean that a creature entering the zone will be unable to do anything else on arrival, but they will be able to act freely while in the Swamp/on the Hill (with the caveat about the Swamp's unmovable and non-elusive) and can move out of the zone with no ill-effects?

This is a good question. The major difference between Swamp and Steep Hill is how movement works. If you are fast and gain the slow trait you can then take a second move action and move through Swamp zone or take a quick action. However on Steep Hill even if you are fast, you must still take a full action to move into that zone.

[DaveW]

Is there any difference between the Swamp's application of the Slow trait upon entering and the Steep Hill's "Non-flying creatures require a full action to move into this zone"?

Am I reading it right that both wordings simply mean that a creature entering the zone will be unable to do anything else on arrival, but they will be able to act freely while in the Swamp/on the Hill (with the caveat about the Swamp's unmovable and non-elusive) and can move out of the zone with no ill-effects?

The difference is that a creature can move two zones (if not already Slow / Hindered / whatever) and enter the Swamp. You can not enter a Steep Hill from two zones away, as it is a full action to do so.

[Arkdeniz]

Ah, those answers make sense. I should have played it out on a board a bit before I asked. Thanks DaveW and Coshade!

[Coshade]

Just wanted to award DaveW and Zuberi for their great answers.