I am now a TBTS rider for a year and done 7100 Kms with my bike. To taske the real cruising experience, I have taken it for long drives on planes and up in hills.
The best part I liked is the design of the Engine. Its so well designed that you dont get a feel of it being tired even after running it for 100-150 Kms at 80+ speed. I drove it for 280 Kms at a stretch and I was prety fresh when I got down of my bike. Tyres size is good which helps to keep it stable on road. I have been a getting a good mileage with my TBTS which went upto 50. The lowest I got was 36 which took time to be corrected by the RE mechanic. Once done, I am back on track for mileage between 43 - 46 KMPL which is good anough for this heavy machine.
The beast has no signs of oil leakage (touchwood)...Although the thump is little less as compared to traditional bullet BUT I havent got the silencer changed trusting the Engineering being thought by RE Engineers.
The bike is doing perfect and I have reached to a stage where I like riding my bike in all odd situations. Driving car has now became a second preference for Me.
I can say from my experience that it is a good product by Eicher to own. Once you own it, you will be surely loving it provided you understand what a bike needs and how to maintain a bike.
Will come again to share my views after 12K mileage. :-)
Till then...Enjoy...!!!