Yes - at the speeds involved -I can find no detectable differences in sharpening/rounding etc.
The real differences are in making the thing reasonably rigid . It is a real eye opener on "what really makes a difference" when one can fly a model right in front -up close and personal whilst watching things bend or twist.
The wings which simply flex-cause no problem as long as it is a straight up/down flex -
The other thing is proving how much the CG can be shifted at these low wing loadings . The slower one flies the more the cg can be shifted . this also changes how much control input is needed.
If you approach foamies with an open mind (as you will) and simply look to see what really matters on super light , high powered , slow speed craft - you may find some nice surprises. At this point we must have done at least a hundred of these and still find them very intersting
Our latest is a full contoured fuselage bipe ( stock kit ) which tho a bit faster , works very well as an outdoor flyer - stable smooth very aerobatic no bad tendencies and the wings ? flat squared off foam on all surfaces