I put a pair of those on my old Sprint but took them off and went back to standard . The vario pegs are very small and not as strong as the originals and they also push your feet slightly further outwards due to the ratchet mechanism. I know it may be different on your Tiger tho and interested what others, and maybe you later, think about them. There were I think 8 different positions, higher, more forward , lower and more backward so lots of variations to play with.
+1 Wot Sprintdave said! Had them on my Daytona 955i and used them to make the riding position a bit less radical for me and a bit easier for SWMBO on the back. Worked well enough for us - when we got used to 'em.
I've fitted a pair to the pillion on my tiger 955i.....as my Beloved complained of the standard set up. The Vario footpegs full size in that the rests themselves are abbreviated and metal so not the best grip for HER. I bought some plain one inch wheelbarrow grips which glued on nicely and have proved comfortable and robust ...so far.