I agree with King.
Banks will want to see not only credit, but cashflow and profit/loss. They will want a PG, so don't even kid yourself in thinking otherwise. If you aren't willing to stand behind your business, why should they? That is me asking the question that a bank is thinking.
If you have a business with plenty of credit, adequate cashflow (and that cash flows through the bank you want to deal with) then you stand a chance. But banks don't do "venture capital" beyond what you personally qualify for (so essentially a personal cc or loc in your business name).
Personally, I don't see why people are so adverse to PG. You shouldn't be gambling on business credit anyway. If you won't sign on the dotted line, you shouldn't ask somebody else to either IMO.
If you seek venture or risk capital, then you need to go the Angel Investor or small VC route (which is tough and expensive). But the higher the risk, the more costly the capital.
When you go to a bank for a loan, they want to be protected. They want assets, cash and/or YOU.
I have several LOC's for 30-50k+ in business, but I have a PG on all of them. It makes it easier and faster to get and keeps my rates lower, since the risk to the bank is less if they can pursue me personally.
Just remember, whether you are incorporated or SP, the business is YOU until you have established history, sales and cashflow and basically gotten it to a level that it truly is a business entity of itself. Until them, its just your alter ego and aka.
Those banks who did easy credit for business are suffering now. So let's not ask anyone to repeat the problem. 