I use it for some years (it is a MODEL of size and Diameter "standard" that covers all the strings of the guitar) in a similar register which uses the Manir David Gilmour live on the pump (I hold the right hand, and a movement of the wrist latral, I act on the frets, which, with proper effect, produces Młoda Arian, like songs of dolphins, or apocalyptic) time I tried it with a glass bottleneck, but I finally opt for the version DEFINITIONS mtal: denser He brings more precision and EHJV the game (important for parliaments fawn which I use) and more solid (I cass in the glass let her go at a concert, while I may drop one in mtal without problem). Only BMOL, Material-corollary, a sound more "cold" and mtallique (no, no kidding!) In the MODEL glass warmer sound but tufts. APRS is a story got, style and techniques used!