Bogoggle, the ones that come with Summit stands are Seat-o-the-Pants. Summit bought them out.
LAH, you are getting almost a unanimous answer here. I'd get him the SOP. Don't just grab one though. They come in different sizes. S, M, L etc (at least the last time I looked). It's probably still the best one going at this time. It's a litle rticky to get used to but after some time it can gotten into even in the dark. I can be worn under or over outer clothing (camo jacket)or, as I found out this year, even under a rain coat with hood.
Before you buy you might want to look at the Vest/Safety Harness Combo sold by Cabela's. I have no first hand knowledge about them but only suggest a look see. Nice thing about Cabela's you can order one of each and just send back the one you don't want.
I am one happy old hunter to see that you rate safety so high on the list. Afterall, you may only fall once to ruin a lifetime of hunting.

Barry