It does say it's 'drip resistant' which sounds like quite a thick fluid..
I see they do a solid fuel tablet, which looks interesting - I have one of those ludicrous esbit 6g stoves but I never liked the chemicallyness (technical term) of the esbit tablets...
It also says:
'The FireDragon Gel fuel is an ideal companion for all outdoor pursuits. Whether in driving rain, the freezing arctic or searing heat, the fuel will perform in extreme conditions.'
I use b and q bioethanol in my meths stoves, it seems to work just like meths only a little more flamey, but for the price (I think it was a 5er for 2 litres) it'll do me :D
Its also available as a solid fuel that melts into a liquid, that's ok to fly with. I also saw that it resets when cold & can be scooped back into a bag...