I have tried the HSS vest but took it back as the vest was very heavy. I think it would be ideal if it were lighter as it wasn't any fun wearing it in the hotter months. I use the belt that came with my summit viper. I like it but it is cumbersome at best to put on as it always gets tangled up in my pack. I did fall out of a stand once while wearing it and my only drawback is that when you are suspended in the air it is hard to get undone and hug the tree down. I think that if you wore it under your outer garment and fell you might be in a bit of a bind trying to get out of it and hug your way down the tree. I use mine like most people and put it under my clothing with just the teather coming out but really would like another way to use it. Just my 2 cents.