We watch most stuff OTA, but we got really spoiled having a DVR because we rarely watch anything in real time. So we got a Tablo. Hook antenna to Tablo. Connect Tablo to network. Install Tablo app on Roku. Done. We can watch real time or Tablo can record up to 4 different channels. There is a one-time guide subscription fee if you want to get it, but it isn't required. It just gives you a guide for several days ahead.
Chief Technology Officer, Barge Captain/mechanic/deckhand/dock hand, Cook, Lawn care and vehicle maintenance. Yep.... I'm retired.
There's really no need for a Roku player to have an OTA tuner. Virtually everyone hooks their Roku up to a TV, which has an OTA tuner within it already. Since you can't record with a Roku, there's zero benefit for having two tuners.
For the very, very few people that might connect a Roku to a monitor, which has no OTA tuner, the the HDHomeRun or Tablo are the best solutions, especially since they can feed more than one Roku at a time over the network.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.