A person with work commitments may be attracted to someone with comparable work ethics, and therefore comparable work commitments. However, this gives rise to practical difficulties in finding a spouse, where both are unable to relocate. In these circumstances, compatible partners may not be able to be together physically due to external commitments. Hence...
Question: Is a long-distance Islamic marriage permissible and practicable?
I have in mind a relationship that would otherwise be halal, but the partners agree to spend a substantial amount of time separated for work commitments, or other reasons.
I can't think of any specific reason that it wouldn't be halal, but it might be regarded as haram e.g. because the husband would not be performing his role as his wife's guardian. (An IslamWeb fatwa describes the technical details of performing such a marriage; presumably their response would have been different if it were haram.)