They fly, but not well. Wings generally too narrow, no lateral stability and they ground loop like horseshoes coming in.
yes, all 4mm triangle airfoils do yield loft problems but that can be remidied by building the wing RNAF style (2mm to 4mm bottom) or for added weight reduction build the wing from 2mm. I have never encountered a spad that lacked lateral stabillity. ground looping is caused by not having enough "toe in" in the landing gear.
I like EB fly both spads and balsa. in my opinion if you want a cheap, good flying, durable trainer then go with a spadet.
rcpilotcd