I wanted to make different colored cables for connecting guitar processor (4 cable method - this makes it easier and faster for me to connect everything). So, along with red, blue and black cables I thought tweed would look nice.
As far as quality goes, this is really great cable, it does not change the sound compared to other quality pre-made cables, it looks great and also it is not that expensive. I really like the looks of the cable a lot.
The things that might be considered negative: this cable does not fold in a manner that cables usually do - it can easily be twisted and tangled and you need to really pay attention when folding/unfolding if you want this one to last a long time.
Also, if you make cables for yourself, pay attention - cable easily tends to thread on "tweed" part, and you may loose quite a bit of cable before you manage to secure it and mount jacks. Maybe I am a bit clumsy for that matter, but if you are like me, try securing tweed end with dental floss cord - it really helps :-)