Don't use Eggbeaters but I do have a wide foot with a very high instep. I wear Specialized MTB shoes and love them. I use the SPDs and haven't have any problems with them other than operator error. I noticed the first week I rode clipless some tenderness on the inside of my feet between the achilles tendon and my ankle and extending halfway up my calf but the tenderness is gone now and I haven't had any problems since. I can't imagine riding a bike any other way!