Not sure I quite get what you mean, the door of my tent is also made out of reflective material so I think it reflects it all pretty well from there, but I agree that the reflection is definitely much lower by the inlets, although not sure if i've noticed any dramatic difference though, as the LED beams are pretty concentrated so don't think the reflective material is even getting used a whole lot in my setup due to the lights being set up flat rather than with a cross beam.
HPS grows will definitely benefit more from the reflective material than LED ones, as the single light source depends greatly on it to reach the outer parts of the plant. Once my current NFT grow is done in a few weeks, im going to bring in my Super Cali Haze auto that i've got in my greenhouse outside, and will most definitely be getting on the cross-over beam action!
Anyways for a wee update, now been on GH's Ripen nutes for a few days, and have definitely noticed some bud swelling, more white pistils, as well as a few buds fox tailing (dont know if this is good or bad, but as far as I can tell more bud isnt too bad! Plus makes the buds look purdy

). Resin content has also definitely increased, and buds are looking a fair amount frostier! Still using Budcandy and Terpinator, and plan to carry on using Terpinator right through flush.
The nice smell of the plants has come back thankfully, making me think i've not missed their window!

I think they may have been locking out some of the nutes for a few days as my PH pen was a bit off, so have had to go back to using my old one and they have since looked and smelt happier for it. Some pics anyways, including my 2 little outdoorsies!