I actually have 4 of them now..got 2 about a month ago and just got 2 more..although one of them the switch started sticking a few days ago..I tried a little rubbing alcohol but it didn't work so right now it's on my work bench apart (yes they can be pulled apart although it's not for a beginner to do) and I plan to try saving it.
I Might be able to clean the switch but a couple wires now need to be re-soldered..if I can't save it I might modify it. The SD has the "mic" style suck switch so really to clean it you would have to pull the top off and just clean the switch but the wires/solder is very fragile..so be careful to not get too much liquid in it if you can.
I just wish they would sell just the SD battery for around $12..but even at $20 (cost me $40.11 for 2 of them shipped from
ElectronicStix) for the "kit" it's not really expensive to replace.
Here are a couple of the 3.5ml SmokTech
tanks I use on it they have slotted 2.5ohm stainless XL CE2's in them but I also use XL CE2 Clearomizers on them