There are very few consulting gigs where you can spend a "few days a month" on the road. The nature of your travel may vary, but odds are that you will be on the road.
By way of example, this week I will work in four cities in three countries. On my previous project, I spent week after week travelling back and forth to the same client site, with occasional side trips to visit satellite sites.
I usually expect Friday night and Saturday night in my own bed; anything more than that and I am grateful.
Some firms run 5-4-3 schemes (including mine, I think), but in practice I haven't seen a lot of people working 5-4-3. Most people are on-site at the client almost full-time.