That's no problem - The main thing is being able to test whether an ISP is discriminating between https and http traffic and I think the linear test does that pretty well.
I posted on the Three support forum showing the drastic speed differences between http and https, asking why this is. After the usual "Try this & that" responses, it made no difference in that I continued to get vast difference between http and https speed tests, so am now waiting to see what their network team responds with. Today is also the worst I've seen their network perform where the TestMy download page was intermittently timing out just trying to bring up the page to start the regular http test (test result was about 150kbps on LTE!), while the https test had no problem once I dismissed the security certificate warnings.
I tried with the Meteor network and both http and https tests gave similar results, so Meteor doesn't seem to prioritise or throttle one protocol over the other.