I don't often get a chance to play one, though a tenor guitar is on my shopping list. Usually i tune it in fifths, either GDAE, or CGDA, depending on how it's strung. There's a mom'n'pop music shop nearby with an inexpensive Gold Tone tenor guitar that's been fun to play, but doesn't have the tone I'm looking for.

For guitar-ish tunings I would just as soon play a baritone ukulele, and I have a decent Kala for that purpose.

Peace, Mooh.