Over on the Shaking the Habitual Academy we have a course that will show you how to incorporate the Splidejs code into RapidWeaver yourself (without a dedicated stack!).
Being able to do this gives you a lot more options than using a stack does. A stack developer has to make many decisions about what to include / not include and also has to make a number of decisions about styling. When you do it yourself then you can use the code to do it however you like - with no restrictions.