I recently purchased the RF 24-240 as a travel lens. Before buying it, I was somewhat concerned about image quality as I would be with any 10x zoom lens, but I have been pleasantly surprised by the lens. It pairs well with the R8 and delivers a very useful focal length range and very good IQ across that range. Examples of the versatility, from the towering redwoods at the Muir Woods National Monument and Alcatraz Island seen from the ferry, to a distant view of Sutro Tower from Alcatraz and a closeup of a butterfly.
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Sequoias"

EOS R8, RF 24-240mm f/4-6.3 IS USM @ 24mm, 1/80 s, f/7.1, ISO 1000
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Alcatraz Island"

EOS R8, RF 24-240mm f/4-6.3 IS USM @ 47mm, 1/160 s, f/8, ISO 100
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Sutro Tower"

EOS R8, RF 24-240mm f/4-6.3 IS USM @ 240mm, 1/400 s, f/8, ISO 100
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Red Postman"

EOS R8, RF 24-240mm f/4-6.3 IS USM @ 240mm, 1/320 s, f/6.3, ISO 8000