oh yeah, Ogri,
I forgot to answer your question that the vinyl really wasn't tough to sew through. I just went really slow on the seams where 3 layers were stacked up...at some points actually just spinning it by hand.
Also, just took a short ride on it and it really is pretty comfortable. When you put your feet down at a stop you can tell that the seat pan is really wide and kinda cuts into your thighs since I didn't overhang the foam off the corner of the pan. With the seat that much lower it almost feels like a different bike.
At this point I think I like everything about the seat but the gap between the top of the seat and the back of the gas tank. Not sure what to do about that asside from getting more vinyl and sewing a new cover with a slight rise as it approaches the tank. I'm assuming that any of you that have "cafe'd" a bike and kept the stock tank had issues with that as well.
