The Peaks would have been tough ss but anything is doable as long as you accept it'll be lots of hard work, plenty of pushing and a bit of running - funny, sounds just like a geared ride to me but that's only because I never really got the hang of changing gear even if I can.
I've also ridden ss at Cannock and at all the MM I've done.
Without wanting to proselitise (I've been so waiting to use that word here), ss is great if weather is very poor. Only an opinion you understand.