Speak to your physio and/or podiatrist as to what will suit you best. usual advice is not slip-ons, but good supportive lace-ups, using, as suggested, a long handled shoe horn, and if absolutely necessary, replace laces with elastic.
I have, throughout many ops, usually been able to handle lace-ups for all but the immediate post-op period.
Personally I don't get on with Skechers. My favourites are Geisswein and Merrell (who do a 'moc' that can, with a long-handled shoe horn be used instead of a slip-on)