They can work together! Like, you get the fancy hilt done at a jeweler and then the smith connects the sword into it. That's how I think it's done, anyways...

[he also devours his cinnamon roll quickly, before returning to the actual shopping they came to do. Soren's loading up a basket with all the stuff they need for the house, he doesn't overthink any choices so it's pretty quick errand]

Lets just keep an eye open on the way home. I bet one of the shops along the road is a jeweler. Or a smith! Just go into whichever we find first.