Pondering on whether to switch to this and ditch inner tubes.Anyone using it and what is your opinion on it? Any good, and how good is puncture protection?

yup, yup and yup – be patient, choose the right tyres 🙂

http://www.cyclistno1.co.uk/features/maintenance/stans-no-tubes-guide.htm

Two key bits of advice.

First, when it says use soapy water, just use neat washing up liquid in copious amounts. I have an old paint brush that I use to paint the beads with when the tyre is on (and after you've added the latex)

Second is if you can't get them to inflate with a track pump and you don't have access to a compressor, then a CO2 canister should do the job.

I've used No Tubes with Maxxis High Rollers and Minnions for four years and had only one puncture in that time. However, I do blow the tyres off the rim from time to time!