Even Toshi double straps are usually cheaper than a decent set of clipless pedals and shoes.
My reasoning was thus: Get a decent set of clips and straps, and when I can afford to, get a clipless set-up. Use clipless most of the time, and keep the clips and straps in case I want to go riding on the island or do some other casual riding.
The fact that my Exile came with clipless pedals sped up the whole process. Just shopping around for a pair of pedals for the Angus now.