@Chris Hopkins has the beta. You can probably find more by searching around for trip reports on TAY for this time of year: http://www.turns-all-year.com/skiing_snowboarding/trip_reports/index.php
It's all weather dependent. If you end up with enough viz and not too much wind, it's doable but expect a lot of fairly flat road skinning. Typically, people start skiing that route some time in May.
Very cool trip, inspiring.
We went in there with skis this Spring and found the trail to Honeymoon meadows to be a bit sketchy when covered with plugs of snow!
Awesome tour, guys. We saw your tracks while doing the Forbidden tour (http://www.turns-all-year.com/skiing_snowboarding/trip_reports/index.php?topic=36253.0) and thought "WTF?"
Nice!