I (the user who prompted the creation of this thread, apparently) play a weissenborn (copy). Gigged it once but it is quite fussy about temperature changes, which can make it a bit tricky in a British music venue because (as I am sure you know about weissenborns) they kind of exist at the boundary of common sense, structure-wise. It's a really cheap laminate thing that sounds quite nice, and I am amazed it has not pulled itself apart, but it hates to go from cold to hot in a hurry.
Currently teaching myself some electric lap steel after years of acoustic only, with a gorgeous little Revelation RLS DLX, but I'd be tempted now by a Gretsch Bobtail and that Fishman Aura. (Nearly bought a Boxcar when they came out; played one for about an hour in a shop. Lovely.)
The weissenborn copy is mostly in open D or low-bass open G; with Newtone Alohas, which come up to pitch at lower tension, I've pushed it to FACFAC, though I have contemplated getting another to leave in David Lindley's favourite CGCGCE, which is a fabulously gutsy tuning on a weissenborn. The electric obviously can cope with anything from open D to GBDGBD.