I have the RF24-105 F4 and RF 35. I plan to sell my EF70-200 F2.8IS VII and get the RF 70-200 F4 because as mentioned above I found I didn't need the F2.8. I have both the EF 16-35 F4IS and the 24-70 F4IS and found them excellent for travel. Time will tell if I will replace them with the RF versions or continue to used the adapters with both my EOS-R and R5. I like the mirrorless so much I just sold off my 5DIV.
For travel, it is hard to beat the 24-105/4. Combine that with a fast and light prime, 50/1.8 or 35/1.8, and you are done. I don't find a need 70-200 for travel, if anything I would like need something wider than 24mm more often.
Later in 2021, you could add either the rumored Canon RF 10-24mm f/4L USM or Canon RF 14-35mm f/4L IS USM.
Personally, I'm adding a RF 70-200/2.8 because I need the extra stop to freeze sport (soccer).
