Generally, when switching farriers, they trim slightly different, especially coming from a traditional farrier to a barefoot trimmer. That being said, once your horse is fully adjusted to a real barefoot trim, there isn't any reason you can't ride immediately after a trim, it's true. But when you change something, such as the farrier or the horse hasn't been out of shoes long, it's better to give the horse a day or two before you expect normal performance.
The reason being is that structures within the hoof may move and have slighly different mechanics going on that the horse needs to adjust to, just carrying his own weight, kind of like when you drive a different car. All the same, yet different, right? Also, until he's used to it, he's more suseptable to bruising, which COULD lead to an abscess, but not always. Could be he's just bruised or has a strong sense of self-preservation and knows his limits on hard packed ground right now.
If he has bruised soles, a few days rest may help and you could try soaking his hooves in a warm water/epsom salts mix. It's soothing, and won't hurt anything, and may make you feel better.
A couple more trims with the same trimmer and he could be ready to ride the same day. If you notice any soreness, get off, don't expect him to work on ouchy feet, and put boots on when you get them. Let the trimmer know what happened at the next visit. In the mean time, keep checking for heat just in case the bruising develops into an abscess. If the horse continues to experience sensitivity after a trim, after several, then something is wrong and the trimmer is probably making a mistake. And it could be he just messed up this time. It happens, as much as no farrier/trimmer likes to admit, sometimes we still trim them shorter than we should, but it shouldn't happen on a regular basis. If it does, the trim needs to change, the vet needs to take a pic or the trimmer needs to change.