E-P5 as a backup for E-M1.1 - what features do I lose?

Dostoy wrote:

Pondering a low-cost compact backup for my main camera -- Olympus EM1 (Mark 1) -- I noticed the availability of Olympus E-P5 bodies in excellent condition at low prices.

It seems that the EP5 was released about a month before the EM1, and shared many of the same features. (Also, I already have an Olympus VF-4 add-on viewfinder, which is compatible with the EP5.)

The big difference is that the E-P5 has the earlier TruePic chipset so misses out on things like Live Composite, focus bracketing, fully electronic shutter and has no phase detect AF.

It's still a darn good camera though with the 1/8000 better grade shutter and uses the same batteries as the E-M1. Must use 0 sec anti-shock as the camera when released was a shocky horror show, fixed by a firmware update.

However, on checking the M4/3 firmware update page, I see that while the EM1 is currently at version 4.6, the EP5 is only at version 1.8. Of course, I don't use all of the features of the EM1, but still...

The firmware level has nothing to do with it. Simply that they bothered to add more features to the E-M1 as time went by as they learned to get the better TruePic chipset working properly.

Any comments/thoughts on the pros and cons of getting an EP5 as a second body?
Does anyone else on the forum have this combination: EM1.1 and EP5?

The E-P5 is my only body, no desire to get anything bigger than that.

I have a menu help page found via tinyurl(dot)com/m43stuff

Regards...... Guy