Yes and no based on religious/spiritual views and UPG.
In conjure work, I see more a focus on ancestor divination, or other Saints, Prophets, or non-Christian spirits (Big Momma and Black Hawk for example).
This is largely based on the religion of the conjure worker. A strict protestant, such as Pentecostal, conjure worker probably wouldn't call on a Saint for help. Depending on the branch, they also would not use the trinity in conjure work.
When I see people who practice "Christian witchcraft", they often do not do divination for the future, just reading the spirit of a person or event.
There is nothing wrong with asking God for the interpretation of a spread, dream, omen, or anything. Daniel, who is petitioned for help in divination, often asked God for help. He actually has a pretty awesome prayer to use after divination:
20 Daniel answered and said, Blessed be the name of God for ever and ever: for wisdom and might are his:
21 And he changeth the times and the seasons: he removeth kings, and setteth up kings: he giveth wisdom unto the wise, and knowledge to them that know understanding:
22 He revealeth the deep and secret things: he knoweth what is in the darkness, and the light dwelleth with him.
23 I thank thee, and praise thee, O thou God of my fathers, who hast given me wisdom and might, and hast made known unto me now what we desired of thee: for thou hast now made known unto us the king's matter.
Like with all divination, sometimes "it just isn't there." You know? Clear your head, try again another time. Remember to thank whatever spirit your working with for their time.