Would it make sense to have a KH24 "muni" and a KH29 for "commuting and light duty" unicycling. There's (for me) no point in having two unicycles if there is only say a 15% difference between them...
Yes, it makes total sense to have a MUni and a 29er separately. You'd want to set up the 29er with short cranks, probably 125mm, to make the difference noticeable, but yes, the difference will definitely be noticeable.