That’s all I really use it for these days. Its easy for me to ignore it though as my head is usually down in a TT position and my brain would process %max faster than bpm 
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The best advice I heard recently is on easy/recovery rides, keep the power below the HR. I have yet to achieve it but it’s only been a week, https://play.acast.com/s/f3fb5c75-b943-4f5d-bd87-27c91611dd24/614212762420660012a9e7b7
Just on a side note, HR straps don’t seem to work with my physiology. I tried Garmin, Polar and even at a lab. I have some ancillary excitation of the heart (something like that) under load. Optical likr Polar OH1 work.
I’m using one of these at the moment with my garmin dual - can’t fault it - £5.97
I go through one official Garmin strap every 6 month so this is much cheaper! 2 months in and so far so good 
Just as a data point - I’ve never had a garmin pod fail but have had a wahoo tickr pod fail twice.
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I’ve made sure it isn’t synced up with the HR monitors. I can’t figure it out.