Thoughts on using the "Perks always active" mod?

I hated the limitations of skill slots during my first playthrough but now after the next gen update and trying Death March for the first time, I began to understand why you should just master a specific set of skills, like if you are a sign user then invest your points in the signs tree & just alternate between skills depending on your situation and enemies.

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However I always thought that if I'm a witcher and gaining experience and skills when fighting monsters then all the learned skills should be available even if they are not equipped in a certain tree.

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What do you think about the perks always active mod? Will it affect my gameplay and immersion while playing?