I just got my replacement tips. The Aluminum ones almost felt like plastic at first. Closer inspection shows that they are as advertised. I put on on a tank for a few trial puffs and it worked/fit just fine. I filled my lonely blue tank back up with Torque (thank god, it's been 3 days since I have had Torque) and damn if it doesn't look spiffy as hell on the blue tank. Torque is a nice light color so you can really see the blue and it has a nice 50's space age wave of the future vibe to it now. 
I will update if I notice anything else. For now I am going to drain my other main tanks and clean em all out and replace the wicks and then see how good the metal ones look on other colors.
I will update if I notice anything else. For now I am going to drain my other main tanks and clean em all out and replace the wicks and then see how good the metal ones look on other colors.