I run a 1×9 set up on my bike it works pretty well. I use an MRP 1x guide that mounts on to the BB shell. I don’t have ISG mounts and I didn’t want a full DH set up anyway. It was £35 and works pretty well and weighs next to nothing. If you are using it for XC/Trail use I’d get one of these, it doesn’t touch the chain either so no additional drag. If its for freeride, get a full fat one with a bash guard etc.
I wouldn’t go 1×9 or in your case 1×10 without one you drop the chain a lot, it makes you realise how many times a regular front mech saves your chain!
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