Merrell Dash Glove, different sized feet.

[janson]

So my wife, who is totally opposed to minimal shoes for herself tried on a pair of Dash Gloves today, and loved them and now wants a pair. The problem with this is that she fits in an 8 with one foot and an 8 1/2 with the other foot, and if she uses the 8 1/2 on the small foot, she has to have a space at the heel for the arch to fit right. Has anyone ever tried some heel spacer inserts or anything else with these shoes? Something like this http://www.amazon.com/Foot-Petals-H...=sr_1_16?s=hpc&ie=UTF8&qid=1347141978&sr=1-16.