Doable? Certainly.
In my -10, I secured a Stratux to the top of the seat back brace behind the rear seats--reception is fine given the fiberglass top. A long micro USB cable is fished along the tunnel to the power pack, which is secured to the carpet between the front seats with a small piece of velcro. That allows me to power up the system from the front seat, and if necessary on a series of long X-Cs, to change the power power pack.
Initially, I used "pass through" power, e.g. charged the battery while simultaneously providing power to the Stratux (Merlin). Per the manual I received, that was a recommended procedure. However, at one point the Merlin failed. On contacting the vendor (Seattle Avionics), I was told that they no longer recommended pass-through power, due to the potential to corrupt the operating system.