Hello tatalink,
we just did an application with GridLayouts and ActionBar features using the Android support library. If you explicitly want to use ActionBarSherlock, there is no problem :).
It should take 2 days to get it done, and you will receive daily updates if needed. I encourage you to talk us via PM, or sending an email: contact 'at' yesweapp 'dot' eu.
Regards,
Manuel