You can deprecate capital expense with both types and it will definitely keep money in the pocket. I am not aware of how there might be a benefit form one to the other, and from my time owning a corporation I don't think it was much diffrent. That was 12 years ago though and times change.
It will be a benefit to the accountants taxes, it makes more work for him and he makes more money because he spends more time on your taxes. As with doctors, lawyers, accountants and other professionals they are in the business to make money. They have to be managed or you end up with unnecessary expenses. The more you know yourself the better off you are.
It does make it easier for the accountant to justify the expense as a legitimate buisness rather than a hobby, if it appears the buisness is actually a buisness. If you go to the trouble to structure a business it will appear to actually be a business. Proving that the business is a for profit business in this situation is the biggest hurdle to overcome.
I agree, it isn't a big deal to do.