String Trimmers

I am considering a purchase of a Husqvarna 223L string trimmer. I see that you now offer a brush cutter kit, but in my searches I came across an Answer Army post from 2011 which stated that Husqvarna did not recommend using a brush blade on any cable shaft trimmers, specifically mentioning the 223L. Has something changed with the model since then, or is it just a shift in opinion? Here is the thread:

http://answerarmy.com/posts/e50141bd4c

I just want to make sure I won't be pushing my luck with this trimmer if I do some brush cutting from time to time, it's a feature I really want to have in my new trimmer.