Is the Ulvestad variation playable for black?

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The Ulvestad variation starts with 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5 Now white's best is 6.Bf1 Nd4 7.c3 leading to this position:
Ulvestad variation after 7.c3

Usually play continues 7...Nxd5 8.cxd4 Qxg5 9.Bxb5+ Kd8 10.O-O! Bb7 11.Qf3 and here black has tried both 11...exd4 and 11...Rb8. I have had a game that continued 11...Rb8 12.dxe5 Ne3 13.Qh3 Qxg2+ 14.Qxg2 Nxg2 15.d4 Nh4 16.Bg5+ Be7 17.Bxh4 Bxh4 18.Nc3 Bf3 19.b3 Rb6 and we arrived at this position.