The thing I worry about while adjusting valves hot is the 'cooling factor'. And first of all, what IS 'hot'? Engine water temp doesn't mean the heads, block and valve train components are at full operating temperature.
Oil temp is a much better guide to determine when your engine is 'hot enough'. Then as you move through the adjustment procedure are the last valves cooling down and changing their clearance as you adjust the first ones?
I don't know, I prefer the 'cold lash' setting myself.