Fraen very narrow Luxeon optics

Anyone tested Fraen very narrow 35mm optics? It is 4.5 degree colimator.
I`m curious how`s is the throw compared for Luxeon3 in maglite with stock reflector, or to other optics.
Maybe someone got some beamshots to compare?
Is that worth buying? How much spill? How long it can throw?
Mike

I tried a Carclo 2 degreee optic a while back with a DB-3W. Although it did a better job at limiting the sidespill and bringing more of the actual light output towards the center of the beam, it did not result in any actual improvement usability wise over the stock reflector. Although the center spot was a little larger, it was no brighter and didn't throw any farther. There was a more gradual transition from center spot to sidespill with the 2 degree optic, but overall I still preferred the stock reflector's ability to change focus depending on the situation.