Typically no. If you have a reputable company(dreambig by Ray and pslate custom are often recommended) you're "probably" ok safety wise.
But they usually cost a fair bit for good quality.
I've never made my own(i dont trust myself) and just rely on my cabling skill to hide things away... On some occasions my efforts have been less successful than others but I got better and the only cost was my free time.
No shit