Ok, open wide and get ready to have a gastronomic as well as economic experience. Most sales jobs come with company paid expenses. You might have a company credit card or a reimbursement program which either one is fantastic for your company to provide. My contention is that unless you have some sweat equity in the game, you are never fully in. I believe this to the core of my soul. When you have the privilege to experience possible loss you allow yourself to go beyond the effort you would normally put forth. This level of extra effort can have a monumental effect on your results.
If everything you do in your sales day has only the downside of not making a sale, appointment or progress throughout the process, what are you really risking in order to gain? The answer is time. I agree time is very valuable but some people tell time with a Rolex not a Timex. My point is, go in to your own bank account and risk some of your own capital for your own greater good.