Takes much longer, I'm impatient - also a can of gas generally lasts me well over a week whereas a meths burner is much less efficient fuel weight for fuel weight.
Yeah fair one Tim (great name BTW!) but any efficient burner (petrol/paraffin/gas) will really kick out some heat, which isn't a good thing if he's trying to lightly fry his dainty wee slices of spam.
Something that is quite an art is finding a pot that is compatible with your choice of fire. I have the trangia stoves in size 25 and 27, which I use with frying pans, zebra billies and a dutchie, I can fry, boil or bake anything using that combo.
If I'm tripping with my oppo and his firebox, I'll just take a Jetboil to keep him adequately beveraged between curries, so I suppose it also largely depends on what your menu looks like?
One thing that always strikes me when tripping is when I see the hardened professional outdoor types (mountain men, soldiers, river guides, etc) and they use a battered old frying pan and kettle with an equally battered old hexi or twig burner, i.e. cheap, nothing fancy and can be used to cook whatever is available in that environment!
Tim