I don't have feedback regarding yellow suede, but as far as suede in general, I highly suggest protecting it straight out of the box. I've used Collonil Waterstop + UV-Protection. It's a very simple spray on and dries quickly.
Did you use this spray on your EB suede Rolandos? I am interested in using them on my blue suede Declics and I am afraid that it will change the color or texture of the shoe.