I've never sold the soft cabs, but they must be much better than nothing. A hard cab would sure be nice for blowing snow.
Wish you had a 2015 or a 2216 instead as I have a new old stock hard cab on the pallet racking just getting faded and aged. For a while, you could buy an add-on hard cab built by Curtis and branded as Mahindra. Hard top, front and rear glass and soft sides if I recall correctly. They were quite expensive, if I recall correctly around $3000, so they sold poorly.
Curtis may still make a cab for the Max26, I am not sure. Keep in mind that the Max26 is the same tractor as the 2415, 2516, Max28 and Max26. But they did change loaders at one point, so if you got a cab for a 2516 there could be some differences around where the loader valve mounts.