HF was having a "closeout" sale about 6 years ago, and I bought a 14" carbide tipped "cold cut" blade for $40 - I knew it wasn't rated for the speed my Ryobi abrasive chop saw runs at, but decided to put on welding leathers, face shield, lean 'way off to the side of the "trajectory", and see what happened -
What happened, was about 20 cuts on .120 wall 2" square tube that looked laser cut - then, by about cut # 25, I could hardly put enough pressure on the handle to get it to cut.
Just gut feel, I blame about half of the short life on HF "quality", and the other half on running approximately 2.7 TIMES the speed those blades are rated for -
Even that "failed" experiment showed me these things have promise, but I'm like others have mentioned, getting the WRONG one isn't a very cheap mistake - plus, similar to Terry I have a larger Jet bandsaw (7x12) and two of the HF 4x6 saws, zip disks, abrasive chop saw, plasma, and O/A torches if things get thicker than 1", so I'm not in a rush to make a bad choice here.
Still looking... Steve