Has anyone tried the dual port chargers they sell on ebay. ^^2xBLN-1 Battery+Dual Charger for Olympus OMD M-5 EM5 E-M5 II E-M1 E-P5 EP5 PEN I am going on a trip within the month and will have my em5ii and em10 with me. They take different batteries BLN-1 and BLS-5. I was wondering if these could do both just with changing the little insert. How do they hold up? Guess I should just get one and see but would love to hear from anyone who has tried it out.