a) I seem to have gone all 18350 and at home 18650 would be more practical
b) I have become (that's 'gotten' KulrMeStoopid ) competent at rewicking and wiring IGOs and am getting there on AGAs
c) It's short and dinky which is good
d) Putting b&c together and at less than a tenner each inc P&P I feel OK about taking the risk of a bit of dissassemby, some glueing and drilling and an attempt to make my own hybrid. Why pay £80+++