I eval equipment pretty frequently. Loaned equipment I generally keep on me at all times and if I have to leave at home it is locked in a safe. Check with your homeowners and auto insurance to determine personal coverage but if you get held up when using it it's generally your responsibility to cover the loss unless you have specific professional coverage. Always ship it insured back to Canon 1, 2 or 3 day delivery with signature. Costs a small fortune but it's still cheaper than renting.
It brings up an interesting point. I frequently have friends that ask to borrow lenses and gear from me and I always ask, if you drop it, get held up or it gets stolen, can you afford to replace it? That usually gets them thinking and they stop asking. So my point is if you don't have insurance to cover the loan and you don't have enough cash in the bank to replace it, then you probably shouldn't borrow equipment from Canon or anyone. A loss could be catastrophic to your finances, relationships, friendships, whatever.
Replacing a 1DX is perhaps 2 or 3 mortgage payments for most people and that could be serious if you don't have funds to get by.
Once you get through that, CPS eval is a great service. In the US, GOLD level doesn't let you pick the dates to eval. They ship when it's available so hard to schedule trips. PLATINUM level gets priority and you can pick your date, and Canon picks up shipping and insurance both ways! But it's 500.00 a year!