For browser access from computer actually most easy access trough metamask than trustwallet just access with mobile phone, but available access trustwallet by import phrase on metamask account. I like with metamask most easy access trough chrome browser by add on extension, maybe with trustwallet have to access by mobile phone and looks not simple when try add smart contract address or add new network there. Still use both trustwallet and metamask but most active transaction trough with metamask because less activities update with mobile phone.
Trustwallet does not have an interface for desktop applications but opts for desktop friendly features if you connect it with "Wallet Connect", trustwallet for the latest version already provides many options for new networks including arbitrum and many others. I also use both wallet applications, but I often use the desktop so I choose to use metamask, because I have many addresses in one wallet, several alternative addresses to use as an opportunity to earn from airdrops and other events.