@shr: I can understand the no-pressure-trust idea with the hose configuration as in the image you linked to. When you put a hose between a tank nozzle and a pipespool inline however, like a lateral bellow, I think the hose will give a pressure trust on the piping, unless you don't put a fixed support in the piping part.
If you don't put a fixed support there the hose will get all axial loads but won't be flexible anymore. I just see it as a (very) long rubber XJ.
Would like to hear some more opinions on this.