Who can afford Simms I already gave up my kids to Simms when they first came out with Zipper Front waders which didn't last long either before leaking that's when I had two good legs an could fish rivers.
Like Ira said I ty my bottom fly to the eyelet of the top fly but sometime I have had all of my fish hooked on the top fly with it sitting sideways from the weight of the bottom fly.
Every holster that holds your weapon by going across the grip safety has my groins and legs very nervous especially with some of the ammo I use in my CC I use a speed holster.