I don't think the two sim check thing is a condition now, although you need 6 months in company post Final line Check before you can apply so you'll have two sims under your belt anyway.
Trigger - I have the criteria in front of me.. They are:
3000 factorised hours
Unfrozen ATPL
6 months/first OPC post FLC
A minimum of 6 months and 300 FLT hours with the company post FLC on type
It's a great company to work for, i'm thoroughly happy to have made the move! Big expansion for the next few years so your likely to get the base you want within a year or so. Rumours are most of the expansion is happening at EMA and GLA for next year. Also, 757 going to ACE for this winter (12 DE Commands and 24 DE FO on 75 fleet) and ALC staying open for winter too.