I hear you. I think it's more a question of reliability and trust for me. On my phone, I'd probably only keep a watch-only version but at this point I'm just testing it along with some others. As I said, I've got Trust and green wallets installed on my phone and they run just fine. I'm planning to put Electrum on a linux live USB drive for production use.
Have tried both version from the site as well as from Google Play. It doesn't even run now. Previously, it would run for a couple of days or so before crashing. Also want to add that I have Trust wallet, metamask and Blockstream's green wallets installed with no issues.
I think reiterate my advice will worth it, maybe it can be as a result Samsung Knox, but I am not exactly sure. It is not also good to have a single wallet on two or more devices. Having it on only one device is better. If you have it on more device, the security is already getting wicker because malware can be from anywhere, I believe you will use one of these device very well for browsing, which can be your phone. Having the electrum on computer is better for security reasons, you will also experience the best of electrum from computer not phone.