I have been flying into LOU, Bowman Field at Louisville for the last couple years. Have seen several RV's coming and going from there. One of my customers talks about a friend with an RV4 based at LOU. :D
The FBO at SDF on the other hand is not going to welcome you unless your RV is inside the jet you're flying.

dlloyd
 
RVs in louisville

My dad and I are building an 8 currently, but we know of several people in the area who have built or are building RVs. Seems to a community of us growing.
 
You will also find a number of pilots, WIZZ, GREASE, JOKER in cincy (short trip from Louisville) all FFI cardholders who fly formation with the River Rats. Give me a shout at [email protected] Glad to have you in the area.