Carcassonne... I have one of the Zotefoam pads on my Actionbent trike and I do love the feel of the pad. Very comfortable on the buns for long rides and it does hold you in the seat suprisingly well.

As for sweat, it all depends... I sweat at 70-1/2 degrees F and get that sweat line on the front of my t-shirts so the back definitely gets wet. The chevrons that Don routers into the pad works well to wick away sweat, but everyone will have different experiences with this. Air certainly doesn't circulate around your back.

I have had the Zotafoam take on some sweat. It doesn't wick it from your body, but it will replace air with sweat where the pressure points are. It is very little, but I do need to figure out a way to keep it 'hygenic'.

If you have the FRP seat with the vent holes slotted into it from Actionbent, do include the slots in your template. That will help most of all for ventalation. I would also consider a built in neck rest in the pattern.

I can't say enough about the endurance this pad give you. It is extremely lightweight and super comfortable. I can't comment on Don's observation about seat angle, but my trike is at it's most extreme reclined position at maybe just more than 30 degrees from horizontal.

Oh, and it is comfortable without a shirt too