The best way to go about this is to start your outclearance from the Primary Reserve, but ensure that you request to be transferred to the Supplemental Reserve List. By doing this you are no longer an active member of the reserves, however your Pers file is kept at the brigade level for a number of years before being archived at NDHQ. Technically you are supposed to parade once a year, and you keep your DEUs for that purpose. I have never actually seen anyone on the Supp list parade though. This is the route that I took and it worked perfectly for me. I will now able to jump right back into the reserves as soon as the legislation allows (hopefully in time for some courses this summer!). I strongly recommend that you take care of all your outclearance procedures before shipping off to Depot. All your kit needs to be returned to your unit as well as area stores, your pay needs to be sorted out, and your unit needs to stamp everything off before you can be outcleared.
Not outclearing and hoping that the RCMP will not ask for a confirmation of your release is a risky move that I don't recommend. Before graduating you to have to fill out a check sheet of admin stuff like that, and lying on it is a sure way to get a one-way ticket home. The Supp Reserve list is the way to go, for both Regs and Res. It is almost like an insurance policy. I have seen guys on the Supp list for over two years walk back into the unit, and be active and back in uniform in literally weeks.
If you have any questions about the Supp list and outclearance procedures I recommend you go to you unit's chief clerk, and they should be able to give you all the current info. Good luck!