Try the RuffWear boots (available at Online Pet Store for Dog Supplies - Waggle Canine Adventure Gear for example). The have a good, solid Vibram sole. Whilst I'm not one for dressing up my dogs, either, protecting your dogs's feet can save you money in vets bills and save your dog lots of discomfort. When Flirtt cut her foot open last year, my RuffWear boots were invaluable allowing me to walk her and keep the wound clean and dry.
When I had my wolfhound, the antibiotics required for a cut foot ran to hundreds of $$, and the boots were excellent again for foot protection.