If made large enough and positioned correctly, then choils are very useful. Ask anyone who owns a Vex or RMD.... The ergo's on those two are awesome.
The Vex choil is absolutely perfect. For the most part I like a full size choil. Now elf choils suck. Having issues with the Scrapmax choil and I also keep trying to put my finger where the choil should be on the Dog Booty. Not such a good thing.
