Yes, I helped Josh pick out my engagement ring. We shopped together and designed it together (he did all the purchasing). Though the idea of being completely surprised by a proposal is romantic, I am happy I was involved. The whole process was fun, and even though I knew the big question was to be popped, there was still plenty of surprise and romance and all that good stuff.
I've had a few people react with a "what's the point of even formally proposing if you already knew?" To those people: Read the full story on my MSP Magazine Real Brides blog. It may not be traditional, but I think what happened was romantic (AND practical).