(Image credit: StudioCanal) Tom's Guide Verdict: 'I Swear' Rating: ★★★½ stars Verdict: "I Swear" is now most well-known for its controversial subject: John Davidson. But while Davidson's BAFTA outburst is etched in memory, it's Robert Aramayo's BAFTA-winning performance that should be the lasting takeaway from this biopic. It's a perfectly fine movie, but Aramayo's on-screen portrayal of Tourette's requires an impressive physicality and deftness to execute properly, which he undeniably does. Where to watch: See "I Swear" in theaters now When I mention "I Swear," you probably think of the controversy at this year's BAFTAs. This biographical drama is about John Davidson, a Scottish Tourette's advocate who himself suffers from the disorder. It's what caused him to shout a racial slur at Michael B. Jordan and Delroy Lindo during the ceremony, which the BBC bafflingly chose to air despite airing the ceremony on a two-hour delay.…