Yes, I use it and I like it a lot! Not only does it keep up with my finished inventory, it keeps up with my cost and where I got the parts to make the pen. The vendor web page and part number is just a "double click" away.
Additionally, when a customer comes back a year or two later and says "make me three more pens like the last one you made me", You can see the photo of what you made, how much you charged, where you got the parts and what you paid then.
Also, If you really keep up with your made inventory, it is just a simple journal entry into quickbooks to adjust sales, cost of sales, taxes, and inventory.
I like it, A LOT!