They are also the same scale as some tanks I had picked up a while ago but never used. Score. I have a feeling this is going to be interesting - there is much better scope for converting, as things can be fudged easily.
I've got round to painting a bit already, as shown below. The minis are a GW spore mine, some ARC fleet troops with a Khurasan Mariner, a mech from Critical Mass and robots from Black Cat Bases. I'm particularly impressed by the CMG and Khurasan minis. I wasn't expecting the level of detail they have - the ARC models have pouches! The tanks shown are a Scimitar and a Saladin, I believe.
More to come soon - hopefully including a battle report using brand new and super secret 15mm war gaming rules!