I rode it from N to S as part of a C2C ride about 18 months ago, very rideable until the lodge, then loads of “narrow path, drainage ditch” type bits, then gets quite vague until the summit.
Top of downhill was good, very rocky, fair few unrideable bits, though that could have been the combo of weariness from riding from Blair Atholl that day and the hardtail already having a few too many snakebites….
Then much more laid back once you get towards the plantations.
Glen Clova hotel has a good bunkhouse and does a super breakfast!
Lovely day out, will be a bit of push / carry.