Yes spend a good while with it. Become familiar with the way everything sounds. Then try and borrow a long enough set of A5 speaker cables and position the Fraim as suggested and see if it makes a difference to your own ears. Then you will know for sure wether there is anything in it
i run my system between the speakers and many others do. Depending on room and of course speakers results will differ. The Fraim as far as I'm aware is more of a tuned support device made specifically with the resonant nature of Naim boxes in mind rather than an outright isolation solution so might not perform at best with strong vibrations coming from the speakers.
another consideration if you do decide to try is room nodes where strong low frequencies can collect. Probably a worse place to situate the Fraim.