I would say you'll notice the deterioration in the edge pretty quickly! I've tried seeing how long an edge will last without stropping, and I ended up about the same as Gugi; Two or three shaves and I could really tell it needed a stropping.

TBH, I'd say wait until you have your strop and then start using the razor. Theres no sense in letting your edge dull over that week and then having to have the razor honed because you werent stropping it.

JMHO of course, but thats what I reckon.

Good luck and keep us posted!