spawk,
like you I'm not certain of Trefoil's chances. However, I would think that if it's not a success the share price would recover reasonably quickly, due to BassGas coming on line soon, the Cliff Head appraisals, and I would think some confirmation of commercial viability on the results of their recent NZ drilling program.
So I'm going to hold AWE for Trefoil which I think is pretty much a free shot at a higher sp.