Orca RS1 and Blueseventy Pointzero3

Hello Members:

I am looking for a good swimskin for OW events (5k-10K). I like the Blueseventy Pointzero3 and Orca RS1. I normally swim in warm water and hot sun, so is it possible to become overheating using those swimskins ??

Do you have experience with Pointzero3 and Orca RS1, which one do yo prefer ??

Do they have the same material than a wetsuit ?

Thanks very much for your advices

Regards, Daniel