Mo I don't want to condemn your "cheek technique" without trying it (because I haven't) but I've been using my Shure headset (wired) for a while now, and I've noticed they're VERY directional (if you want to get the best sound) and I can only assume (yes, just assume) that if I used this technique myself, I'd have to turn my gain and volume up to feedback inducing proportions to get any decent volume level with the cheek placement.

I could be wrong, maybe you DO have something here, but I'm - quite frankly - afraid to try it for the sound quality/feedback reasons mentioned above.