Thanks all for your replies. I will check out the Big Book of Helix Tips. I'm still somewhat new to Line 6 effects so I've just been changing presets as I see stuff on YouTube that catches my eye and tweaking the rest by ear. But, I've seen nothing to believe the Helix delays cannot do anything the Walrus D1 can....and yes it's not a cheap pedal. The only reason I bought the Walrus was because I have a Boss Katana digital amp and was not satisfied with the delay options.
For my reverb swap test (instead of the Walrus D1), I was using a cheap Biyang rv-10 baby boom tri-reverb pedal. I believe it's China made if not mistaken. It's not a bad pedal and does add flavor to the HX presets, but has an awful hum where I may need a noise gate to clean up after it.
Now, I have an MK15 (Mark Tremonti) amp head with Marshall speakers which the HX Effects compliments very well. I just got tired on rolling the dice on pedal after pedal.
I've had a busy weekend but I will test the Walrus directly into my guitar to rule out no issues with the pedal and re-post results here.