I used the same charger on my Ultrafire 18350's and it worked fine. I had a Roughstack and was waiting for a Maxi extension tube, so I too was in a conflict as to whether to order another set of 18350's or hope the Maxi tube and Ultrafire 18650's became available before I needed to acquire more 18350's. I wasn't very impressed with the 18350--not a great upgrade over a 14500 in real-world vaping IMO. Fortunately MadVapes received the 18650's and the Maxi tubes the same day and I was set. Don't know if this is similar to your situation but just my 2 cents worth.
Nevertheless, the Trustfire 001 has performed well with both batteries. Good luck.