I believe I saw a post a long time ago about someone thinking of trying this route, but they never posted results, so it may not have happened. My best guess is it would be a pretty decent early spring climb (like you said) with cramp-ons and ax in the Class 3-4 range.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe