they wont lock you up for being out of statue, that's not there department, an the others hand doing a rmcp police clearance cbsa wil now know your address an that are in Canada without status and can pick you up at anytime. if it's a sponsorship application u applying for best to send in your application without the rmcp check if they require it they will Request it later on, this method just buy u a little more time with your application, but ircc can also alert cbsa to u as well through your application both way it 50/50 u just never know