Well, technically, my shop is a smithy, and I'm a smith, but hey, my shop could probably tell some cool stories if asked....
As for the stock handling question, I sue tongs almost exclusivly, but I know people who go the other way as well, welding handles onto almost everything.
The advantage of using a welded handle is the ease of use, where tongs, I feel, give me more feedback. but it's important to have a pair of tongs that fit the stock properly. I've got about 25 pair of tongs that I use ona regular basis, some more than others, but I've also got another 50-75 pair that don't get used very frequently at all, like the pair that has a stock support built into the pivot that holds 1" rectangular stock, but hey, I'll call it a collection, and retire when I sell all my tools in 30 years as "antiques" on Ebay.
Basically, you can do either, but most knife makers seem to prefer the welded handles in my experience.
Also remember, I'm a blacksmith who makes some knives, so my idea's tend to be somewhat different.
Tony