hi DP, haven't got that one. I have the monument one about £20 and is good bit of kit. Also got one from todays tools and is in some ways better as it does 15 and 22mm whereas the monument you need 1 for each size
The rothenberger olive splitter is nice tool,but i prefer the todays tools it does all sizes so better tool to carry
your right there tony I prefer that to. when I got it thought it wouldn't work very well (going inside the pipe as it does) and was cheap but was pleasantly surprised and prefer it to monument one now