Never take them apart! Do you disassemble your laptop?
Only concern is to make sure not to kink the hoses when you pack them. Carry on or baggage is your choice. Often a good idea to gice some kind of wrap protection - towel, wetsuit, underwear, ...
Just out of curiosity, what is your reasoning for not taking them apart? Regs are trivially easy to remove hose from and replace them. Is there something I'm missing?