Many parents are concerned that with a traveling mohel, you don't have the flexibility of having the mohel come back a few days later to see that everything is OK. I understand the concern.
Here is why it shouldn't be.
I have become a much better mohel since I began to travel. While I used to leave the baby's bandage on for 24+ hours, I now either take it off or have it fall off within 4-5 hours of the bris.
It is the bandaging at the bris itself which is the critical moment, to the point that my taking the bandage off a few hours later is either a mere formality to speed up the healing process (because the baby doesn't need the bandage anymore or it might have fallen off on its own), or it is because I want to see how things look.
The way I leave the baby at the end of my time with him at the bris is the way he will be. A few days down the road, I can assure you over the telephone, or you can send me a photo via email and I'll tell you what you are seeing.
Any concerns at that point (three days later) are concerns you'd prefer to address with a physician anyway. But in my experience, these haven't come up in a very very long time.
It's always worth the call in the first place. If it doesn't work for you (or for me), we'll figure that out quickly, no harm done.
But if the services I provide (which are unique) are the kind you want, which you will not get from a different mohel, wouldn't you want to at least explore the option?
See the mistakes parents make and what makes me a different mohel