Well, I have ridden the X6 today and this is my review of the service:
Outbound from Leicester, I rode in a Pulsar 2. Not really surprising, although one of the Temsa coaches parked in St. Margaret's bus station shortly before the other bus started boarding. However the bus I rode on, 3799, seems to have been reupholstered at some point.
On the way back, I rode on Temsa 7103, which was running quite late and left Pool Meadow bus station over twenty minutes late. After leaving Fosse Park, however, we got stuck in traffic due to an apparent van fire up ahead on the Narborough Road South, and were held up for so very long that the next X6 (which unlike my X6, ran through Hinckley) wound up overtaking us by using the side road instead of the main road. Thankfully, we eventually got through, but arrived in Leicester nearly 100 minutes late!
I must add that I rather like the moquette, but the seatbelts are the stiffest I've ever used, and the thing the seatbelt clicks in to digs into the side of one's leg.