I have a differing opinion and I live near FTW. You're going a long way out of your way for what could be little to no traffic congestion. Don't get me wrong 281 is a much more scenic meandering trip through the area than 35W and if that's your goal by all means take it.
35W through FTW is 100% dependent on time of day and whether or not you'll take a toll road. If you go through mid morning or mid afternoon it's usually not a big deal and if you'll take the toll it's almost never a big deal.
We went to Waco for a few days last week, we left about 10ish got on 287 near our house set the cruise on the MH, drove to the toll way on 35W, drove through downtown still with the cruise on. Toll ended south of downtown got on 35W no big deal hit the cruise and on to Waco.
Google Maps traffic is what we use to determine our routes in and around DFW.
Former Owner of
2016 Cedar Creek 36 POS (My Last FR Product)