First, an old mtb with slicks is never the practical choice.
Yes it is .. rolls just as fast as a road bike (at least mine does), can chuck it round corners quick, however really stable, brakes stop you from 15mph to nothing in half the time than a road/fixed. Only bad thing is you can't get out of the wind easily ... oh and mine is a SS so less parts as well. I need to see over anything I can just stand up.
Yes it is .. rolls just as fast as a road bike (at least mine does), can chuck it round corners quick, however really stable, brakes stop you from 15mph to nothing in half the time than a road/fixed. Only bad thing is you can't get out of the wind easily ... oh and mine is a SS so less parts as well. I need to see over anything I can just stand up.