Sleepwalker is not strong enough to save someone from a lynch at EoD, it kinda would be like "let's lynch him, worst case we just mislynch a sleepwalker"
So if he is town I could see how giving us time to think about is good.
OTOH if he is scum it is a good claim to not do a 1:1 trade
I might be misreading, but you seem to be leaning town on Chugger right after his claim. Interesting that you've changed your stance since.