I use 2 YS-90's with an E-PL1, using a
HW Digital Adapter My final price for the strobes (Cragslist) was so low I could not resist, and I'm quite happy with everything. Unfortunately, I have only made 2 trips with this setup- the first only days after assembling it, the second 1 year later without touching it in-between. I tried working on possible TTL operation for a total of about 10 shots, but got some poor results, and gave up. Not because I don't think it will work, but the manual operation using Full & Half power settings on the strobes was working great, and the subjects to shoot ware just too good to miss. Pretty much all of the shots I have taken have been full manual, 1/2 power on the strobes.
Images from my to trips (both to Anilao)
Anilao 2011
Anilao 2012