Mount up. This will be the most useful tool in your box if you get one. It nips, tucks, and prevents injury from hot glue. There's a million reasons you will need a pointy tool in your box. Applying welt, tucking fabric into pli-grip, tucking away foam and batting... just get 5. You will thank me later.
Also, hot tip. You don't have to use a regulator. You can use an upholstery needle, an awl, a Philips head screw driver... You do not have to pay a bunch of money to get the benefits of a tool like this. Just think sharp, thin, and pointy.