I bought this mat on a whim - from a recommendation email via TRXTraveller - and boy for once I am happy that I got poor impulse control.
The way the mat 'sucks' to the floor in my garage is amazing - no more worry that I'll slip and slide and potentially end up in a heap on the floor.
Being a beginner with Trx and training from home on my own the one thing that really sticks out for me is the markings on the mat. It is so easy to replicate workouts with the same amount of effort. As well as easily increase or decrease intensity. Being able to keep a track of the width of your stance is also ace.
Being based in the UK I was expecting quite some delivery time but even here it exceeded expectations. The mat arrived very quickly and was packaged very securely. Speaking of packaging, getting the mat in its own little carrying bag makes it so much easier to stow away and even bring on excursions to the park, trips and so on.
I think you're getting the message here - get one! You will not regret it.