Tamron 70 to 300 VC thoughts

I use Canon 7D and 5D cameras of various generations, at present with a Sigma 70 to 200 f2.8, and a Canon 300 f4.
I'm finding that I miss the reach that the 7Ds give me with their crop factor when using the 70 to 200 on the 5Ds. I'm loving my move to full frame, even though for wiring pictures to a news desk I carry the 7D for that alone.
OK, I don't expect L lenses from a second hand version of this lens, but anyone got thoughts on overall sharpness, water resistance and all round usability.
It's primarily going to be for cycle sport, and picking out interesting folk on crowds at events, festivals, remembrance Sunday. Not pixel peeping jobs, as all for local paper use.
Of course, for actual stage work, the existing lenses can stay for their larger apertures.
I'm finding that I miss the reach that the 7Ds give me with their crop factor when using the 70 to 200 on the 5Ds. I'm loving my move to full frame, even though for wiring pictures to a news desk I carry the 7D for that alone.
OK, I don't expect L lenses from a second hand version of this lens, but anyone got thoughts on overall sharpness, water resistance and all round usability.
It's primarily going to be for cycle sport, and picking out interesting folk on crowds at events, festivals, remembrance Sunday. Not pixel peeping jobs, as all for local paper use.
Of course, for actual stage work, the existing lenses can stay for their larger apertures.

This is a review from EPZ.
https://www.ephotozine.com/article/tamron-sp-70-300mm-f-4-5-6-di-vc-usd-interchangeable-lens-review-14690
https://www.ephotozine.com/article/tamron-sp-70-300mm-f-4-5-6-di-vc-usd-interchangeable-lens-review-14690

Glad nobody has said that I should consider using a selection of prime lenses, and zooming with my feet. Some days my 85mm wouldn't cut it.
Lisa Nandy enters Labour leadership race with call for change
https://www.theguardian.com/politics/2020/jan/03/lisa-nandy-enters-labour-leadership-race-with-call-for-change?CMP=Share_AndroidApp_Copy_to_clipboard
Lisa Nandy enters Labour leadership race with call for change
https://www.theguardian.com/politics/2020/jan/03/lisa-nandy-enters-labour-leadership-race-with-call-for-change?CMP=Share_AndroidApp_Copy_to_clipboard

Sorry if the wrong cut and paste confused anyone.
Well, it arrived at 7 last night, and by 8:15 the first images off it were published in a regional paper!
It's ridiculously lightweight, I thought MPB had sent an empty box. Not exactly L build or weight.
One of the needs was for a lens that could be used for distant shots of RTCs etc. Managed it's first one perfectly, 10,000 ASA by street light at 1/25 at 300mm hand held.
Well, it arrived at 7 last night, and by 8:15 the first images off it were published in a regional paper!
It's ridiculously lightweight, I thought MPB had sent an empty box. Not exactly L build or weight.
One of the needs was for a lens that could be used for distant shots of RTCs etc. Managed it's first one perfectly, 10,000 ASA by street light at 1/25 at 300mm hand held.
