That's pretty poor efficacy though?
The point is to combine that vegetative phase light with the extra reds to make it work both in VEG and Boom?
As Cutter explained, the LEDs are fully encased in an IP68 housing with a diffuser lens, so there are inherent losses associated with the trade-off of being fully waterproof. As the Buddies are not intended to be primary lighting, 2+ umol/j system efficiency for under-canopy lighting is still better than HID and the wide beam angle allows the plants to grow into the LEDs, minimising wall losses. Of course it depends on how you mount them.
I'm not quite sure what your second question is. If you are asking can each string be powered by separate drivers with separate timers, then the answer is yes. What growers do with each string is entirely up to them. Some growers will want to veg and bloom in the same tent or area. Some, like
@Prawn Connery, have separate veg and bloom areas. It appears he has matched the CRI95 4000K with the PC Red to make a combined flowering spectrum. You would have to ask him. I believe other growers who are trialling these are doing something similar. My personal opinion is that the 4000K CRI95 version is already a nice spectrum and as far as under-canopy lighting goes maybe you don't want to induce any more shade avoidance by using lots of deep red and far red. But that is why Teknik gave these to other growers to trial to see how they would perform. The PC red could also be used as supplemental red lighting for those who are running CRI80 3000K or 3500K strips or boards. They are not the most efficient for that use but it is really up to the grower's imagination as it's all about how flexible Buddies are.
I do need to point out that the report above for the PC Red is not a Buddie. That was my mistake, I should have realised from looking at the beam angle that it is not a Buddie. I will leave the report up, as it is still interesting to see the spectrum which I believe is the same, but I'll just repeat again that it is not a Buddie.