A church we work with has just had a request by the "kitchen ladies" that they would like outlets for 15 crock pots. That doesn't bother me so much as the 15 roasters that will end up being used instead. Adding a GD to the mix is asking for headaches.
Install it with reservation noted. The breaker will trip, is the worst that can happen. Well, that, and you will be blamed for eternity.
The SABC rules only apply to dwelling units if that helps you decide. I have no problem with your proposed install but if you want to be real picky, I guess you have a 9.2A fixed load and 180 volt amps per other receptacle that doesn't supply a specific load.I have a new disposal in a church kitchen. Its a 3/4hp at 9.2A Can it be installed on a circuit that feeds counter receptacles. The panels are full and its in a wood framed building that is very hard to get back into the electrical rooms with out removing alot of sheet rock.