So by running HS logged out you can save on page request, but not completely? If there's a request limit tied to my IP address, how does this increase my pool?
Is there any downside to running HM in another browser or incognito logged out?
The limit on your IP and account are not the same -- you can have more refreshes from your IP than from your account without running into errors.
HM won't be able to see HITs that requesters hide from those not qualified logged out. I'm not sure how many requesters use this so I'm not sure how big of a deal it is. You also won't be able to accept the HIT directly from the logged out HIT monitor.
Also, I'm not 100% sure because I haven't used a logged out HM in a long time, but I remember certain features stopped working after one of Amazon's updates. I think requester ID searches don't work anymore because they removed the requester links from the front page for those logged out?