One other Mooneyspace tradition seems to be forgetting who asked the question and what question was asked. In this case the question was asked by a fairly new pilot and it was: "... I would like to fly around Europe, all year round once my certification and experience permits it."
The answer to a student pilot transitioning from a Cherokee is yes you may be able to fly all around Europe with O2 and with no TKS and with no turbo for most of the year. No fairly new pilot should fly voluntarily or find himself involuntarily in icing conditions. Period. FIKI or no FIKI. Again here in Seattle and personally I wouldn't fly a TKS equipped light aircraft in our thick, persistent, serious and broad icing conditions. I am not talking summer flying or thunderstorms. I am talking the kind of icing we get here this time of the year and for at least 3 to 5 months per year. Just go check icing in November in PNW and you will get why "TKS is close to irrelevant" here in these conditions. Regardless. His question was about purchasing his aircraft and transitioning from a PA 28. I am sure TKS Mooney are close to magic in heavy icing encounters but for a new pilot in the UK paying well over $75k STC install to get some marginal additional value (maybe - since for a couple of years there is no way for him to truly use TKS to increase number of real flyable missions) combined with the certainty of the additional cost, maintenance, and a 100lb loss of weight doesn't make sense IMHO. Similar trade off's for the turbo. My 2c.