I just ordered an eo9 for my 6p to use with my aw rechargeables, i will let you know what i think about those when i get them.
.....if you are using 2x RCR123 cells in your 6P, the EO-9 is not a good choice. If you would use this combination you could damage the lamp or more likely the two cells. Your run time may be between 10 to 15 minutes tops. The below are mdocod's suggestions to consider for the 6P/2x RCR123 combo.
Cell configuration: 2xRCR123
Bulb Options:
LF D26 ES-9: 7W, 98 - 56 lumen in 38 minutes
LF D26 SR-9: 9W, 126 - 74 lumen in 25 minutes
LF D26 HO-9: 12W, 160 - 88 lumen in 20 minutes
SF P90: 9W, 118 - 70 lumen in 25 minutes
G&P G90: 9W, 118 - 70 lumen in 25 minutes
G&P D26 7.4V "DX 10W xenon": 9W, 118 - 70 lumen in 25 minutes
G&P D26 7.4V "DX 15W xenon": 10.5W, 136 - 80 lumen in 23 minutes
Pathfinder P90: 10W, 129 - 75 lumen in 23 minutes
WE D26 9V: 10W, 136 - 80 lumen in 23 minutes
Pila GL3 LA: 10W, 136 - 80 lumen in 23 minutes