Silly as it may sound, still a perfectly legal character concept, and extremely allaround powerful also.
Per RAW:
Can outperform any other character in social interaction four to five times per game session by spending a fate point and getting auto-success with WPB degrees of success on Charm/Command/Intimidate tests no matter how hard the test actually is, thanks to mechanicus background has more access (+20 to +40 to tests depending on base availability) to cybernetics and the rarer they are the bigger the bonus, meaning high-end cybernetics like Cerebral Implants and Synthmuscle Grafts are much more easier to get, plus possibly the best starting gear there is in terms of rarity which means in can be traded for whatever needed, as Psyker has access to cheaper Willpower advances that will do actually even more by adding to social interaction thanks to WPB degrees of success thing mentioned earlier beyond the benefits of "just being a Psyker", and when character screws up he pays less Influence for that, meaning he is probably the first one to get enough Influence to become an Inquisitor in the long run, also meaning having the highest "buying capability" to get additionaly buffed up by some good gear.
Add Infused Knowledge talent as cherry on top and there You have it -- a perfect... gamebreaker
Any thoughts on this matter?