I agree with the toad (although I saw class As up at the top where we spent the night at Dingwall.) Buses routinely drive it but the question is really whether you think you will enjoy it. We would certainly do it again but we have a much smaller RV.
Going up clockwise, we were almost pushed off the road by a very large delivery truck barreling toward us at high speed and crossing into our lane. There's no shortcut, so commercial vehicles are on the same road as sightseers.
Coming back down, steep descents and hairpin turns offered beautiful scenery, but required concentration.