I had the opportunity to inspect on of the new Tri-Powers last week. Using the ambient windowless indoor light of the shop, the reticle glowed extreamly bright. The shop was moderately lit. The battery would only be necessary in darkness to amplify the tritium or I suppose if you were scoping a very brightly lit area outdoors and suffered moderate washout. Thus as the battery is only a back-up or supplement, it's run time is not as relevent as it would be in a sight such as an Aimpoint or EOTech where the battery is the sole source of illumination.
You could in theory mout the Tripower forward like an Aimpoint. The one I saw was mounted mid rail and I found that sufficent for both quick target aquisition and more precise bench rest aiming. I think the mounting location would be your personal preference.
Lastly, I am uncertain about the glowing fiber optic as I did not turn out the lights in the shop to check.
Hope this helps.
Regards,
Gary