there are several lap steelers that look in on this forum. I am sure they will have more to contribute.
currently I am using two lap steels in my band. one is tuned C6. it is an old 30's Richenbacher Model 59.
it has to my ears the perfect tone for old country. now C6 is great for that. I also discovered that C6 does have
many blues notes and in convenient places.
I do have a designated blues lap steel. it is a 1939 Epiphone Zephyr. the pickup was rebuilt by Lindy Fralin.
the steel has the soft woody bell shapes at low volumes, but roars when turned way up. my Tubescreamer adds to the blast.
I can dial just the right amount of breakup I want with the two.
naturally, I use for heavy blues. I like the open E tuning for straight up blues. great power chords up and down the neck.
the singel string runs have nearly the same shapes as Standard tuning ( the G string on the lap steel is tuned G#).
for me I don't mind lugging several instruments to rehearsals and gigs. each guitar has its voice.