I agree that the HWOT cursive would not be how I would want my children to write. I don’t think that switching programs would present a problem, as cursive programs start with their own warm-ups and getting-ready strokes that are separate from print, unless you are using a D’Nelian or similar program. The books that I have seen that are focused on print to cursive, just mean that print is in the first half of the book and cursive in the second. Again, unless it is D’Nelian or similar.
I personally LOVE Abeka’s cursive. It is the most beautiful cursive of all the programs I have seen. (Haven’t looked at SCM, but I’m sure it is good, too.) The books have good warm-ups and ease the student into each step. I also love what they have the studen writing – keeping a science animal notebook in the third grade level, and beautiful quotes from history and Bible in the fourth grade level. My two older children who used the second through fifth grade levels have the most beautfiul writing, and many people comment on it. (My current fourth grader was not ready for all of it, so we are using the top part of each page of third this year and will use the bottom part next year before even going on to fourth, so we use them as tools, not forced grade levels.)
I hope you find what works well for your son 🙂