that tyre will be pretty decent on the rough, better than a mx tyre on the road, i ride enduro tyres, they are usually fairly soft so grippy on the road (for a knoblie) but do wear quite quick, depends how much and what kind of offroad you'll be doing really
go with the maxxis mate thats what i use great for greelaning and the road last ages aswell had mine on for ages still got loads of life left in it your go through 2 back tyres before you will have to change the front again :)