I personally think it is more important to check that the PH has a suitable back up gun (and ammo) you can borrow in case your gun or ammo doesn't arrive. Although I generally lean towards using a reasonably standard cartridge, where ammo at least might be available, as it it preferable to use your own rifle if possible.

That is why it is always a good idea to bring the most important stuff with you in your carry-on luggage. Wear your hunting boots/shoes, and carry a pair or hunting pants and shorts, a hunting shirt or two, extra socks and underwear etc.

On two occasions I have had a bag go missing when flying to Africa. Once when my wife and I were on the way to Zim and Botswana, where one of our bags ended up in Iceland (God knows how that was possible???). It took a week to reach us. The other happened just a few weeks ago when I flew to Burkina Faso. The flight stops in Niamey, Niger, and somehow my Zarges case and several other peoples bags got left there when we continued to Ouagadougo. It took 4 days for me to get my case, but it didn't matter since I had all my essentials.