I have a couple Renzettis, HMH, Griffin, and a NorVise... I have had the Nor-Vise less than a year and have been tying for about 50 years... There is nothing you can do on another vise that cannot be done on a Nor-Vise. There are a lot of things you can do on a Nor-Vise that are at least far more difficult, if not impossible, on other vises.
Without the Nor-Vise the bobbins are not as totally useful... I have a bunch of bobbins and spare spools and they get used heavily... I just keep them piled in a heap to make things difficult.