You might check on the mechanics board, but I think a 36 hole hub can work just fine with a 28 hole rime by skipping a hole between each 4 hole set. If you buy from harris ask what they would charge to build your wheel, that will eliminate any screw ups as to spoke length.
2000 Montague CX, I do not recommend it, but still ride it.
Strida 3, I recommend it for rides < 10mi wo steep hills.
2006 Rowbike 720 Sport, I recommend it as an exercise bike.
1996 Birdy, Recommend.
Wieleder CARiBIKE (folding), decent frame.