A '29er' MTB wheel is the same size. The tubes are the same also, 622. I use MTB tubes on Vados. Mountain bike wheels tend to be strong. I agree, once spokes start breaking additional taxing stresses are placed on the rest of the wheel. Then it is time for a rebuild or to install a new wheel. It could be cool after the warrantee to do an IGH build on a Vado. With slightly larger gauged spokes laced in with thread lock.