Dwarf hamsters and Ovo tubes?

My syrian hamster ped away a few months ago :( and I think I'm finally ready to own another hamster. I really want to get a pair of dwarfs but I'm not sure if they would be able to climb the Habitrail Ovo tubes that I have set up. (I have two 20 gallon tanks connected to each other by a bunch of Ovo tubes) Does anyone have a dwarf in an Ovo cage? Do you think they'll be able to climb them? Thanks!