I have owned and used both very extensively.
I personally like the Luxe better. The grips felt nicer to me, although they are a bit thicker/the frame is thicker. I like it that way so it contors to my hands better.
Stock triggers, didnt like either which is why I put VP triggers on
Shot-wise, they are both nice in their own way. Clone has a bit more snappyness to it, while the luxe has a very soft shot to it. Both have minimal barrel rise though. I couldnt say which is "better", but I liked the Luxe more.
Efficiency, Clone wins. Simple as that.
I personally did not like how the HPR felt in my hand with the clone. I hold my guns a bit weird so it wasnt the clone itself. The luxe however felt/feels perfect.
Honestly your best bet is to try and shoot/hold both before buying. Worst case is that you buy one, dont like it and trade it for the other on here.
If you were near Connecticut I would let you shoot my luxe and my teammate would let you shoot his Clone GT. If you ARE close by, throw me a pm and we will make sure to meet up so you can figure it out
Goodluck to you and your choice!! Either way, you can not go wrong. They both have their pros and cons. You just have to decide which outweighs the other