I think it's possible that introducing reserve banking on top of Bitcoin could solve the lending problem for a while, just like it solved the lending problem on top of gold - for a while.
In the end, though, the same problems would crop up again after a while: bank runs, the attempt to deal with bank runs via a central bank, the tendency for downward spirals in countries with a trade deficit, and so on. Eventually, countries would have the same incentives to get out of a "Bitcoin standard" as they had with the gold standard.
In the end, though, the same problems would crop up again after a while: bank runs, the attempt to deal with bank runs via a central bank, the tendency for downward spirals in countries with a trade deficit, and so on. Eventually, countries would have the same incentives to get out of a "Bitcoin standard" as they had with the gold standard.