He is asking about the using either a traditional bikepacking saddlebag (ie Revelate Viscacha) vs using one of the newer saddle harness/holster setups (ie Revelate Terrapin).

^This


Thank you bikeny for your answer. Now I can see things more clearly 

I've got front harness, frame bag and backpack. But the problem is I hate riding with backpack - I think it's not the best idea. Therefore I'm thinking about buying saddle bag / harness. I just wonder why people using saddle bag not harness or vice versa.

My first post here so HELLO everyone!
I'm thinking about buying under seat packing system. Looking at endless list of bikepacking designs and I wonder which system is better.
Saddle bag or Harness/holster?
I'm sure you can tell me something about your experience. Why saddle bag not harness? or vice versa.
I'm looking for a system for 1-2 longer trips a year (2-3 weeks) and dozens of shorter - 2-4 days.
Can you help me decide please?
Thanks