sure your chain will fit right up on your tomatec or what ever standard grinder. but your grinder will grind your square cut into a round cut.
in fact a lot of folks do this exact thing. mostly because there is NO ... that's right zero reasonably priced square chain grinders.
it's either belly up a $1,000 for a base line Silvey square grinder or be extremely lucky to find a used square grinder.
lucked out and found my Simington 450 for $250 + $40 shipping. asked no questions and jumped on it. one of the best investments I've ever made!