If you go through Neurology or neurosurgery you will not be able to do diagnostics.
In radiology world, neuroIR is not popular for many reasons. Most prefer diagnostic fellowships with better hours. Or on the other hand they can do IR itself if they like procedures.
In Neurosurgery world it is not popular. You can make more money wit better hours doing spine. Also to many neurosurgeons Endovascular stuff is not invasive enough.
In neurology it is relatively popular as it is the only procedural way out of neurology. But, it is not as popular as you think. Still, it is not bread and butter of any practice, you have to end up in a bid stroke center which limits your opportunities. Also it is additional 4 years or more of education for them. Job market for general neurology is relatively good with good hours and at least for now they are one of the only fields that see slight increase in reimbursement.