Thanks all for the warm welcome - on six-string I'm a Tele man but also love my Danelectro '59 NOS+ and use a Fender '65 Princeton Reverb for guitar.
I just ordered a Fender Rumble 40w as a "starter amp" for the Gretsch bass. I'm pretty confident that's a low-risk choice on the bass side.
You guys (and gals I'm sure) may have me purchasing a Gretsch 6-String again !!!!