On a related note: I was talking to my GM the other day, and I expressed my displeasure that Ritualist (Crafter) didn't give you anything that you don't get from Ritualist (Anything Else), and thus shouldn't be worth the same -2 Refresh.
It was only after reading this thread tonight that I realized Ritualist (Crafter) should be a -1 refresh power, and is basically Refinement without casting. -1 refresh, and you get 2 Focus Item slots, or 4 Enchanted Item slots. When I built my artificer, I wondered who in their right mind wouldn't pay the extra 1 refresh to get to thaumaturgy with a specialty, instead of ritual. But if you're only in it for the items, it should be 2 extra refresh, and you might rather have an extra 4 focus item slots instead.
Imagine an Alchemist: 7 refresh spent on items gets you 14 focus item slots. Superb Lore.
+5 Craft Power. +5 Crafting Frequency.
8 enchanted items or potions, all at 10 shifts or power, and 6 uses per session free. Arguably, the enchanted items get additional uses for mental stress. It depends on whether such a character meets your definition of "practitioner". Your "gun" and your "armor" are both enchanted items. The rest should probably be potions.
As we know from my Artificer thread, such a character isn't as powerful or as versatile as a wizard, but he's also only spent 5 skill points. Spend the rest on becoming a face, knowing that your magic can cover for you in most combat and utility situations.