Technical pens are for drafting and would be a nightmare for everyday writing.
They are not agile and require a high degree of control to use. They need to be held absolutely perpendicular to the writing surface at all times, and only work when held vertically with the nib pointing down. They don't write well or at all on certain kinds of paper, often damaging the paper. They are easily broken and are difficult and messy to fill, clean, and maintain.
Don't get a technical pen.