Once again I am glad cynic-al has addressed the Tomac thing, I do wish people would remember/learn that, using Tomac as a reason for drops off road is silly. More of an anti advert!
I have a vague idea that he didn’t even do a complete season, and that he swapped after the first few races on the advice of his road coach to keep the position the same as on his road bike (the only reason he did it, again adding weight to Tomac being an anti advert for drop bar MTB’s unless your doing it for this reason), then swapped back after the worlds. There are certainly images of him from that year with flats and bar ends. Maybe only after the world when he quit the road.
But the above is not too poo poo drops on MTB’s, not my cup of tea at all but run what you like 😀