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Been there, done that.
I'm telling you, skip the onesie and go for the 2 piece. Takes 0.4939 seconds longer to zip up because of the 2-piece zipper, but is infinitely more versatile. Guy in my office has worn 'stiches for like 12 years. He just replaced his 10 year old suit with a new one when the old one was finally falling apart. The twosie is just as easy to step in/out of.