Lots of great replies
As has already been stated, in general, there should not be any difference but not all shoers are created equal and neither are barefoot trimmers.
Back when I was hard trail riding and a couple of my guys wore shoes, the main difference I saw between my shoer trimming "for pasture" was he would pare off way too much sole and trim way too much frog. I couldn't have ridden anyone barefoot until nearly the next trim time if I'd wanted to. No one was sore but they would have been if I'd tried to ride them on the road.
When a horse is barefoot, none of the soul or frog should come off, unless they are ready to shed and need some help to speed the shedding process along.
Rolling the toe has been around for eons, as someone else commented. It is how my granddad taught me back in the 60's.
"Pulling the toes back" is something that should only be done by a very knowledgeable trimmer and only under certain circumstances. One of my four horses wears a really agressive roll on his front toes and he does need it.
I have trimmed my horses off and on all my life and it is not something I would have ever tried, but this horse now hits a lick at liberty that is pure delight to watch.
I continue to be amazed at the many horse ownerson these forums who don't have a clue what is going on with their horses hooves. They act shocked when the farrier mentions "whiteline, bruised sole or wall separation thrush, fungal issues", and wonder what each looks like
"no hoof no horse" is certainly the truth. While horses need brushed and shined, learn about the hooves and spend less time brushing and examine the hooves part of that time instead.
Every person that owns a horse (or several) OWES IT to each of those horses to have your nose down in those hooves to understand how each hoof on each horse looks and functions. Especially when the shoer or trimmer is there. There is no excuse for not learning - teach the horse to stand without holding it so you can observe and ask INTELLIGENT questions.
Sorry, got off the subject a little, but somehow this seemed like the opportunity to speak up